$OpenBSD: patch-src_action_cpp,v 1.1 2017/05/03 17:59:02 jca Exp $
--- src/action.cpp.orig
+++ src/action.cpp
@@ -4,6 +4,7 @@
 // $Id: patch-src_action_cpp,v 1.1 2017/05/03 17:59:02 jca Exp $
 
 #include <string>
+#include <cstdlib>
 #include "wmi.h"
 
 #include "action.h"
